Planted tank fertilisers and axolotls

[pondweed]

Are there any products we're agreed are safe and good for axolotls? I'm reading that Java Fern likes some iron to keep it green and spinachy. I wanted to check here first though.

 

[hairypumpkin]

I read on here somewhere that a user uses the Flourish (Seachem) line of fertilizers. I believe they said their vet approved it for aquarium use.